JPH06238663A - Grinder - Google Patents

Abstract

PURPOSE:To conserve labor supplying a roughly ground product to a grinder by automatically supplying the same in the grinding of a thermosetting resin and to improve labor environment. CONSTITUTION:The roughly ground matter 2 in a container 3 ground by a rough grinder 1 is leveled by a leveling device 4 and a predetermined quantity of the roughly ground matter 2 is allowed to fall to a grinder hopper 6 by a fixed quantity control and supply device 5 and subsequently pushed in a cylinder 8 in a state made easy to level by reciprocoatingly moving a pushing-in device 7 two or more times. Thereafter, the roughly ground matter 2 is pressed to the surface of the blades of a grinder by a pusher 9 to be ground.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher for thermosetting resin.

[0002]

2. Description of the Related Art Conventionally, fiber reinforced thermosetting resins such as SMC molded products, laminated plates and phenol resin molded products,
As a method of reusing thermosetting resin industrial waste containing a particle-reinforced thermosetting resin, it is possible to pulverize it into a powder form with a pulverizer and use it as a substitute material for filler such as calcium carbonate or as a reinforcing particulate material. Many. In this case, as a method of producing fine powder, in terms of the life of the crusher blade, a cylindrical grinding tool type crusher with excellent wear resistance with diamond etc. embedded in the cylinder surface is used, and it is used in a sander etc. at another place. The cut pieces are put into an apparatus as shown in JP-A-63-39648, and in the case of small to medium quantity pulverization, they are manually put into a fixed cylinder and pushed by a pusher to produce fine powder. It is the actual situation. For example, as shown in FIG. 2, a roller (12) for pressing the upper part of the crushed material (2) contained in the container is held.
In the state of being pressed by, the crusher is pressed by the pusher (9) against the blade surface (10) of the cylindrical grinding tool type crusher for crushing.

[0003]

However, according to the method disclosed in Japanese Patent Laid-Open No. 63-39648, the product fed to the crusher has a width of 100 to 300 mm and a length of 200 to 5 mm.
It is a cut piece that is cut into large pieces such as 00 mm, but in that case, the cutting work is a manual work and it requires a great deal of labor, and the working environment such as dust is extremely bad, and the cut piece is a part of the three-dimensional product. In this case, since the shape was irregular, it could not be grasped with certainty and could not be automatically supplied to the crusher. There is also a method of crushing to the palm size and supplying, but in the case of mass crushing, it is possible to move the container and pack and crush the crushed product at another place, but especially small to medium crushing In this case, the size of the container, especially the height (skimmer) becomes small, and since it is charged into one fixed container for investment profitability, there were various problems as described below. As a means for supplying the coarsely crushed material, it is possible to use air transportation or a method of supplying the crushed material by a conveyor or a robot instead of manual work, but it is difficult to transport the crushed material by air transportation because the crushed material is heavy, and a conveyor is used. If it does, it cannot be pressed against the crusher during dropping, and the coarsely crushed product cannot be dropped uniformly, and if it exceeds a certain size, it cannot be easily put in the container (or cylinder). There is a problem that the filling capacity is small and the inlet is frequently clogged, and it is not possible to continue the work, but it is also possible to crush only a part of the width direction of the crusher, and the crushing capacity is greatly reduced. was there. Therefore, as a means for supplying the crushed material to the crusher, it is the actual situation that it must be done manually.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a crushing apparatus for improving the crushing ability and automatically performing a consistent operation from coarse crushing to crushing. Has an aim.

[0005]

In order to achieve the above object, a container (3) for containing a crusher (1) and a crushed material (2) crushed by the crusher (1), and a container (3) ) A leveling device (4) for leveling the coarsely crushed product (2) and a uniform amount of the crushed crushed substance (2) are supplied by a quantitative control supply device (5), and a crusher hopper (6) for storing the same The coarsely crushed material (2) in the hopper (6) and the crusher (7) are pushed into the inclined cylinder (8) by the pushing device (7) several times, and then the coarsely crushed material (2) in the cylinder (8) is pushed by the pusher (9). ) The surface of the cutter of the crusher (10)
Press and crush. The size of the above-mentioned coarsely crushed product (2) needs to be within a certain fixed range, and the number of times of pushing into the cylinder is preferably 6.5 times or less from the viewpoint of crushing ability and operation reliability. . As shown in Table 1, the crushed product may be any of fiber-reinforced thermosetting resin and particle-reinforced thermosetting resin mainly for SMC molded products, laminated plates, phenol resin molded products and the like.

[0006]

As apparent from the above construction, when the crushing device according to the present invention is used, the thermosetting property of SMC molded products, phenol epoxy resin laminated plates or phenol resin molded products which are crushed by a crusher such as a shredder is used. The resin crushed material is stored in a container, and by leveling it with a leveling device such as a vibrating device, the crushed resin crushed is leveled and sent to a certain extent quantitatively to eliminate dripping. . After that, by using a constant-quantity control supply device such as a conveyor scale or a timer to make sure that it falls into the hopper by a specified amount, it will be easier for the product to enter so that it will not stick out of the cylinder later. In addition to eliminating operational troubles due to, prevent the reduction of crushing ability due to insufficient filling amount. In the case of small to medium amount crushing, the coarsely crushed product (2) has a constant size regardless of the coarsely crushed amount, but the cylindrical size of the crusher, especially the height (skimmer), becomes smaller due to the crushing ability, and the cooling of the diamond Since the diamond blade is crushed within a certain angle range, if the crushing amount is small, the blade diameter and hence the cylinder height (skimmer) will be small, and it will be more difficult to put the coarsely crushed material in the cylinder. Therefore, by pushing the pushing device back and forth multiple times at a certain angle to a cylinder with a certain inclination, the coarsely crushed material that became a mountain in the hopper gradually moves due to the component force in the vertical and horizontal directions due to shaking. Since it is aligned in the direction parallel to the slanted cylinder, the bulk is reduced,
Since it is easy to enter the cylinder, it can be easily moved up and down, right and left under a small resistance, that is, in the direction parallel to the cylinder, so that it can easily enter a single hour from a wide area of the cylinder opening in a uniformly leveled state.

As shown by NO2 in FIG. 3 and Table 1, even if the coarsely crushed material supplied by the supply device is dropped into the container only by a leveling device such as vibration, a certain amount does not fall and it falls into a mountain. To do. When pushing it vertically from above, the coarsely crushed material is only compressed, the leveling effect of the crushed coarsely crushed material is small, and efficient and reliable filling of the container (or cylinder) is difficult, The crushing ability is reduced (see Table 1).

Further, as shown in FIG. 4, it is difficult to drop a certain amount of the coarsely crushed product in the case of automatically supplying it to a slanted cylinder by a vibrating device or the like. The speed of entering the cylinder is slow and the amount is small, and the coarsely crushed material is easily clogged at the charging port, and the roughly crushed materials cannot be separated at the charging port. Therefore, not only can you not continue the reliable work because it will be caught even if you push it with the pusher, and the crushing ability will also drop. On the other hand, in the case of the present invention, since it is pushed into the tube having a certain fixed angle by the pushing device at a certain angle, a force to move in the vertical and horizontal directions is generated, and it can be pushed easily and surely. Further, since the pushing is stopped when the tip of the pushing device moves to the surface of the cylinder, there is no possibility that the coarsely crushed material is clogged between the pusher and the cylinder to cause a malfunction. After the crushed material is completely stored in the cylinder, the opening is covered with the tip of the pushing device to prevent the crushed material from protruding. After that, the crusher is crushed by pressing the roughly crushed material in the cylinder against the surface of the blade of the crusher with a pusher.

[0009]

EXAMPLES Examples 1-1 of the crusher according to the present invention will be described below.
1-2 and 1-3 will be described with reference to FIG. The coarsely crushed material (2) in the container (3) coarsely crushed by the coarse crusher (1) is leveled by the leveling device (4), and then a predetermined amount is fed by the quantitative control supply device (5) to the crusher hopper. Drop to (6). When entering the next slanted cylinder (8), if the size of the coarsely crushed product (2) is larger than the size of the cylinder (8) by a certain ratio or more, it is not easy to put it in the cylinder. For this reason, in order to efficiently and surely insert it into the cylinder, the pushing device (7) is pushed into the cylinder (8) in a state in which it is easily smoothed by reciprocating a plurality of times. After that, the blade surface (10) of the crusher is pressed by the pusher (9) to crush. In this example, the size of the coarsely crushed product (2) is 8 to 17 cm in length, 3 to 10 cm in width, and 0.5 to in height.
It has an irregular shape of 4 cm, and the cylinder (8) has a width of 20c.
The length was 40 cm and the height (spacing) was 6 cm. In the case of SMM, if the pushing device (9) pushes only once, 30
Only 0 gV can be stored in the cylinder (8). Therefore,
Even if 800gV was put into the hopper and pushed in, it could not be fit in the cylinder (8) and could not be pushed by the pusher (9), but if pushed back and forth 3.5 times, the rough of 800gV put in the hopper (6) The whole crushed product (2) could be stored in the cylinder (8), and it was possible to crush reliably and efficiently. Next, Table 1 collectively shows other examples and comparative examples. The target crushed product is not limited to these and may be any thermosetting resin including a fiber reinforced thermosetting resin and a particle reinforced thermosetting resin.

[0010]

[Table 1] As the crusher, a diamond wheel cylindrical grinding tool type crusher with a width of 250 × 250 mm and a rotation speed of 850 Y.Pm was used. The width of the container or cylinder is 20 cm, the length is 40 cm, and the height is 6 cm.
Met. The size of the crushed material is 8-17 cm in length, 3-10 cm in width and 0 in height.
It has an irregular shape of 5 to 4 cm.

[0011]

As described above, the crushing apparatus according to the present invention is particularly effective for crushing small to medium amounts, and has the following special operational effects. In the present invention, if the crusher is put into the crusher, the crushed product crushed by the crusher is automatically supplied to the crusher and crushed. Compared with the above, productivity will be greatly improved and the working environment will be improved by being freed from dust. Also, in the case of mass crushing, it is possible to put a certain amount of coarsely crushed material in a separate location from the crusher in a movable container or cylinder and level it, but in the case of small to medium quantity crushing, a fixed type container or Put the coarsely crushed material in a tube and crush it in the same place.
At this time, when putting in a slanted cylinder, the direction of the coarsely crushed product is determined by shaking and pushing the crushed product into a low-to-medium-sized crushing cylinder with a low height (skimmer), and a certain amount of high density is maintained for a short time. Since it can be reliably and evenly accommodated in the cylinder, a large amount of it enters and is uniformly crushed, so that the crushing ability is improved. In addition, the number of times of pushing is due to crushing ability and reliability,
It is particularly desirable that the number of round trips is 6.5 or less.

[Brief description of drawings]

FIG. 1 is an overall sectional view of an apparatus showing an embodiment of a crushing apparatus according to the present invention.

FIG. 2 is a side view of an apparatus showing a configuration of a conventional plate crushing apparatus.

FIG. 3 is a cross-sectional view showing a method for supplying a coarsely crushed material to a crusher in a conventional crusher.

FIG. 4 is a cross-sectional view showing a method for supplying a coarsely crushed material to a crusher in a conventional crusher.

[Explanation of Codes] 1 Crusher 2 Crushed product 3 Container 3 Leveling device 4 Quantitative control supply device 5 Hopper 7 Pushing device 8 Cylinder (or container) 9 Pusher 10 Blade surface of crusher 11 Cylindrical grinding tool crusher blade 12 Presser roller

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B29B 17/00 8824-4F // B29K 105: 26

Claims (5)

[Claims] 1. A container (3) for accommodating a coarse crusher (1) and a coarse crushed product (2) crushed by the coarse crusher (1) and a leveling process for leveling the coarse crushed product (2) in the container (3). A predetermined amount of the crushed material (2) leveled with the device (4) is supplied by the quantitative control supply device (5),
Crusher hopper (6) and hopper (6) to house it
The coarsely crushed product (2) therein is housed in an inclined cylinder (8) by pressing the pushing device (7) back and forth a plurality of times.
After that, the crusher is characterized by pressing the roughly crushed product (2) against the blade surface (10) of the crusher with a pusher (9) to crush. 2. The crushing device according to claim 1, wherein the crushed material (2) is a thermosetting resin containing a fiber reinforced thermosetting resin and a particle reinforced thermosetting resin. 3. A crushing device characterized in that the crushed material (2) is housed in an inclined cylinder (8) by reciprocating the pushing device (7) a plurality of times. 4. The method according to claim 1 or 3, wherein a plurality of times is 1.
A crushing device characterized by being 5 times or more and 6.5 times or less. 5. The thermosetting resin according to claim 2, wherein the thermosetting resin is SM.
C (sheet molding compound) molded product, laminated plate, and phenol resin molded product, a crushing device.